<nav className="global-navigation">
  <div className="logo">
    <Link to="/">
      <img src="/logo.svg" alt="Logo" />
    </Link>
  </div>
  
  <ul className="nav-links">
    <li>
      <Link to="/">首页</Link>
    </li>
    <li>
      <Link to="/dashboard">仪表盘</Link>
    </li>
    <li>
      <Link to="/challenges">社区</Link>
    </li>
  </ul>
  
  <div className="nav-actions">
    <Button 
      type="primary"
      icon={<Icon type="users" />}
      onClick={() => navigate('/challenges')}
      className="community-nav-button"
    >
      社区
    </Button>
  </div>
</nav> 